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US 4,065,875 AGranted
Selective destruction of certain algae
AssigneeUniversity of Delaware
InventorRichard Frank Srna
Life of this patent
Estimating the term…
Abstract
A process is described for the selective destruction of Phaeodactylum cells in the presence of Thallasiosira cells by subjecting algae culture liquid containing these species to ultrasonic waves.
Claims1
In a process for the culture of Thallasiosira algae cells for use as a nutrient for feeding of shellfish, the improvement which comprises passing the culture liquid containing the Thallasiosira through a zone in which ultrasonic waves of the order of 20,000 cycles per second are generated in order to destroy any Phaeodactylum algae cells that may be present.
Dependencies are inferred from the claim text.